Chimney-cap construction.



No. 766,487. PATENTED AUG. 2, 1904. J. W. BELGHER.

GHIMNEY GAP CONSTRUCTION.

APPLIOATIOH FILED APB. 9. 1904.

N0 MODEL.

n y Yupemlfoz IL` E" @t SH01/neg NITED STATES Patented August 2, 1904.

PATENT OEEICE.

CHllVlNEY-CAP CONSTRUCTION.

SPECIFICATION forming part of Letters Patent No. 766,487, dated August 2, 1904.

Application flled April 9, 1904. Serial No. 202,464. (No model.)

Be it known that I, JOHN IVTLLIAH B ELCHEE, a citizen of the United States of America, residing' at Chicopee Falls, in the county of Hampden and Commonwealth of Massachusetts, have invented a new and useful Chimney-Cap Construction, of which the following' is a specification.

My invention relates to improvements in chimney-caps in which certain peculiar stiffening, strengthening', and uniting' means are incorporated with the cement or other material of which the main structure is composed, as hereinafter set forth; and the objects of my invention are to provide a strong and durable chimney-cap made up of separate parts and to atford adequate fastening' devices for uniting the independent parts to form a single structure which is tight and rigid.

Iattain these objects by the means illustrated in the accompanying drawings, in which- Fig'ure l is a plan view of the improved structure, portions of one corner of the top being' broken away to clearly show the members embedded therein; Fig'. Q, a longitudinal vertical section on lines f1' .1', Fig'. l; Fig. 3, a similar section on lines l/ y, Fig'. l; and Fig'.

A, a plan view showing' how certain of the strengthening' and fastening' members may be made into a frame, all except the end portions of the side rods being broken out to economize space.

Similar letters of reference refer to similar parts throughout the several views.

This invention consists in general of a base having' ahole in the center and a top with posts between, all of cement or other suitable material, a stillener in the top, strengthening-rods in both the base and top, and fastening devices for uniting' said base and top to said posts, the stilfener, rods, and fastening' devices being' embedded in the cement members and consisting, preferably, of metal. The upper surface of the top may rise from the edges to the center, as shown, and the conlig'uration of the base and top may be rectangular or otherwise, as desired.

Referring to the drawings, t represents the base, having' an opening' a. therein, the top, and c the posts, which rest upon said base and support said top at the corners. The upper surface at the top is rounded, as shown at A stilfener (I, in this case of woven wire or wire screen, is embodied with the top 7/ below the surface 7), the contour of which latter it follows more or less closely in order to get a truss etl'ect, and thereby enhance the eifectiveness of said stitl'ener. The edges of the stiffener (Z bear against the strengthening-rods a in the top although this may not be necessary. Strengthening-rods (l are embodied with both the base ay and top and arranged parallel with the edges of the base and of the top, to which edges said rods correspond in number, although in practice more or less than such number may be employed. These rods may be solid, as shown in the lirst three views, or hollow, as shown in the last view, and they may also be independent of each other, as in the first instance, or connected, as in the second, which last construction will be presently described.

As a fastening' means for the base, top, and posts I may employ nuts f, embedded in the corners 0f both the base and top immediately below and above the centers of the posts, and rods g, embedded longitudinally in the centers of said posts, each of said rods being' screwthreaded to the right at one terminal which projects beyond the surrounding' post and screw-threaded to the left at the other projecting terminal, as shown at g. The threaded terminals g are adapted to enter suitable opening's formed in the base a and top Z1 and engage the nuts f to draw said base and top tightly against the posts when the latter are turned to screw the parts together at the time of assembling', and when so fastened the structure is very firm and strono'.

As before intimated, a frame may be made, similar to that shown in Fig'. 4, for the base and another for the top by attaching' the rods e to adjacent sides of the nuts f; otherwise there is no material change.

In order to better incorporate the rods a and g with the surrounding' cement or whatever similar material is used for the base, top, and posts and prevent the possibility of slipping' on the part of said rods, the surfaces of IOO the latter where they come into contact with the surrounding material should be roughened or broken up in some way. This may be conveniently done byboring recesses or holes at intervals into the rod from the outside, regardless as to whether the rod is solid or hollow, as shown at L, or projections It may be cast or otherwise formed on the outside of the rod, also regardless of the kind of rod employed. However, a hollow rod with holes extending entirely through the sides thereof is perhaps the most ecient device for the purpose.

Although not shown, because probably unnecessary, the nuts f may have their surfaces roughened or broken somewhat in the same manner as the rods.

It is not always necessary for the stiffener to follow the outline of the upper surface of the top. On the contrary, it may be flat and still serve the purpose of adding to the strength and durability of said top by affording a tie, as it were, for the cement or other material.

If desired, the nuts may be omitted and the projecting terminals of the rods g left unthreaded, in which event said terminals simply enter the holes prepared for them in the base and top, the weight of the latter being depended upon to hold the parts in place.

What I claim as my invention, and desire to secure by Letters Patent, is`

l. The combination, in chimney-cap construction, of a perforated base, an imperforate top, a woven-wire or wire-screen stifi'ener embedded in said top, and posts supporting the top from and above said base.

2. The combination, in chimney-cap construction, of a perforated base, an imperforate top having its upper surface rising from the edges toward the center, an embedded wovenwire-screen stiffener below said upper surface but following more or less closely the outline of the same, and posts supporting such top from and above said base.

- 3. The combination, in chimney-cap construction, of a perforated base, strengtheningrods embedded therein, a top, a woven-wire or wire-screen stiffener and strengtheningrods embedded in said top, posts supporting the top from and above the base, and means to fasten the three last-mentioned members together.

4:. The combination, in chimney-cap construction, of a base, a top, posts between said base and top, and rods embedded in said posts and projecting beyond the ends of the latter into holes prepared for them in the base and top.

5. The combination, in chimney-cap construction, 4of a base having nuts embedded therein, a top also having nuts embedded therein, and posts having embodied rods eX- tending beyond such posts at both ends, the projecting terminals of said rods being screwthreaded and adapted to engage said nuts.

6. The combination, in chimney-cap construction, of a perforated base, strengtheningrods embedded therein, a top, strengtheningrods also embedded in the latter, posts interposed between said base and top, and vertical rods embedded in and of greater length than said posts, the projecting terminals of said last-mentioned rods entering the base and top.

7. The combination, in chimney-cap construction, of a perforated base, strengtheningrods embedded therein, a top, strengtheningrods also embedded in the latter, posts interposed between said base and top, vertical rods embedded in and of greater length than said posts, the projecting terminals of said lastmentioned rods entering the base and top,

and means to afford a iirm and rigid connection between the rods and the surrounding material so that the former cannot turn or slip in the latter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN WILLIAM BELCHER.

Witnesses: v

F. A. CUTTER, MICHAEL GRIFFIN. 

